Fig. 6: 5G (5G, fifth-generation) WDM (WDM, wavelength-division-multiplexing)-based bidirectional OWC (OWC, optical wireless communication) systems with cascaded RSOAs (RSOAs, reflective semiconductor optical amplifiers). | Communications Engineering

Fig. 6: 5G (5G, fifth-generation) WDM (WDM, wavelength-division-multiplexing)-based bidirectional OWC (OWC, optical wireless communication) systems with cascaded RSOAs (RSOAs, reflective semiconductor optical amplifiers).

From: 5G wavelength-division-multiplexing-based bidirectional optical wireless communication system with signal remodulation employing cascaded reflective semiconductor optical amplifiers

Fig. 6

a Configuration of 5G WDM-based bidirectional OWC systems with signal remodulation employing cascaded RSOAs. The optical spectra (b) before the MZM at the transmitting site, c after the MZM at the transmitting site, d before the WDM DEMUX at the receiving site, e after the WDM DEMUX at the receiving site, f before two RSOAs, and (g) after two RSOAs. EDFA erbium-doped fiber amplifier, DEMUX demultiplexer, PC polarization controller, MZM Mach-Zehnder modulator, OFDM orthogonal frequency-division multiplexing, LO local oscillator, VOA variable optical attenuator, OC optical circulator, MUX multiplexer, PD photodiode, LNA low noise amplifier, DSO digital sampling oscilloscope.

Back to article page